package com.fozu.common.codec;

import java.security.MessageDigest;

/** 
 * 采用MD5加密
 * @author Xingxing,Xie
 * @datetime 2014-5-31 
 */
public class MD5Util {
    /*** 
     * MD5加密 生成32位md5码
     * @param 待加密字符串
     * @return 返回32位md5码
     */
    public static String md5Encode(String inStr){
    	try{
    		 MessageDigest md5 = null;
    	        try {
    	            md5 = MessageDigest.getInstance("MD5");
    	        } catch (Exception e) {
    	            System.out.println(e.toString());
    	            e.printStackTrace();
    	            return "";
    	        }

    	        byte[] byteArray = inStr.getBytes("UTF-8");
    	        byte[] md5Bytes = md5.digest(byteArray);
    	        StringBuffer hexValue = new StringBuffer();
    	        for (int i = 0; i < md5Bytes.length; i++) {
    	            int val = ((int) md5Bytes[i]) & 0xff;
    	            if (val < 16) {
    	                hexValue.append("0");
    	            }
    	            hexValue.append(Integer.toHexString(val));
    	        }
    	        return hexValue.toString();
    	}catch(Exception e){
    		e.printStackTrace();
    		return null;
    	}
    }

    /**
     * 测试主函数
     * @param args
     * @throws Exception
     */
    public static void main(String args[]) throws Exception {
    	String str = new String("123456");
        System.out.println("原始：" + str);
        System.out.println("MD5后：" + md5Encode(str));
    }
}

